By samuel



March 15 1927.

F. M. FURBER TEMPERATURE CONTROLLING APPARATUS FOR INTERNAL COMBUSTIONENGINES Original Filed Feb. 18

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Deceased- Jj'am z I? Calf/en Admirzzsfrafor:

Patented Mar. 15, 1927.

UNITED STATES PATENT QFFICE.

FREDERICK M. FURBER, DECEASED, LATE OI REVERE, MASSACHUSETTS; BY SAMUELR. CUTLER, ADMINISTRATOR, OF

REVERE, MASSACHUSETTS, ASSIGNOR TO CHARLES A. PIPENHAGEN, OF CHICAGO,ILLINOIS, ATE-ID JAMES F. RALEIGH, OF

RIVER FOREST, ILLINOIS.

TEMPERATURE-CONTROLLING APPARATUS FGR INTERNAL-COMBUSTION ENGINES.

Original application filed. February 16, 1918, Serial No. 217,689.Divided and this application filed May 7, 1926. Serial No. 107,360.

This invention relates to temperature controlling apparatus for internalcombustlon engines.

For many years it has been customary to equip internal combustionengines, particularly automobile internal combustion engines, withshutters to control the supply of cooling air to the engine and/or thecooling system thereof. In the case of water cooled internal combustionengines, the

shutters have usually been associated with the engine radiator tocontrol the flow of air through the radiator.

The invention hereinafter described and claimed contemplates theprovision of shut ters which automatically close when the en gine stopsbut which have any open position which they assume determined bymanually operated means under the control of the operator.

The present application is a division of application Serial No. 217,689,filed February 16, 1918.

In the accompanying drawings illustrating the invention,

Figure 1 is an elevational view, partly in section, illustrating a watercooled automobile internal combustion engine equipped with theimprovements of the present invention; and

Figure 2 is a fragmentary view on somewhat larger scale, which shows,among other things, the suction-operated clutch mecha nism in section.

Similar characters of reference refer to similar parts throughout thedrawings.

The drawings show an internal combustion engine 2 of a. type commonlyused in motor vehicles, and a water cooling system for said engine whichcomprises aradiator 4, a connection 6 leading from the upper end of theengine water jacket to the upper part of the radiator, and anotherconnection 8 leading from the lower end of the radiator to the lowerpart of the engine water acket. The arrangement shown is of thethermosiphon type although it will be understood that the invention isequally adapted to a pump system. In the normal operation of the enginethe hot water leaving the upper part of the engine water jacket passesthrough the connection 6 into the upper end of the radiator and flowsdownwardly through the radiator where it is cooled, and then returnsthrough the connection 8 to the jacket. During the descent of the waterthrough the radiator 4:, a large portion of its heat is dissipated tothe air which is forced through the radiator partly by the motion of thevehicle and more particularly by the action of a fan (not shown). Themeans for controlling the heat radiating action of the cooling systemhereinbefore briefly described. comprises a series of shutters 10mounted in front of the radiator frame or casing and arranged to swingabout horizontal pivots 12 into either an open position, as shown inFigure 2, a closed position as shown in Figure 1, or any intermediateposition.

It will be noted that the shutters 10 are provided with a commonoperating bar 14: so that all of the shutters will be operated inunison. One of the shutters is provided with an actuating arm 16 whichis connected by a link 18 with a lever 20, which is pivoted at 22 to theradiator casing or some other suitable stationary part of the vehicle. Aspring 24 acting between the lever 20 and the radiator frame, or someother stationary part of the vehicle. at all times tends to hold theshutters 10 in closed position.

As thus far described. the apparatus does not or need not differessentially from temierature controlling shutter apparatus heretoforeemployed. in connection with automobile internal combustion engines.

Description will now he made of that part of the apparatus whichdistinguishes the present invention from the prior art.

Pivoted to the lever 20., at 26, is a rod 28 which has a snug slidingfit in the base member 30 of a cylinder 32. The upper end of the rod 28is connected with a piston 34 which operates in cylinder 32. A rubber orleather washer 36 may be used under the piston to seal the openingthrough which rod 28 slides when the piston is at the lower end of itsstroke.

The cylinder base 30 is conformed to provide a nipple 38 for cooperationwith one end of a conduit 40 (conveniently flexible) which communicateswith a passage 42 which opensintosthe cylinder 32 below the pistonpreviously mentioned. The other end of the conduit communicates with theintake manifold 44 of the engine. It will thus be understood that thesuction which always exists in the manifold li, to a greater or lessdegree, when the engine is in operation, always tends to draw the piston3i and the cylinder 32 into therelative positions shown in Figure 2 whenthe engine is in operation. An aperture 46 is "formed in the top of thecylinder 32 in order that the suction clutch,

constituted by the cylinder and piston,

readilymay respond-to manifold suction.

The-upper end 0'? the cylinder is fixed to'the lower end of a rod a6which has its upper end pivoted to bell crank lever i8 which ispivotally supported by abracliet- 50 which may be carried by theradiator frame as shown.

Pivot-ally connected with the bell crank lever 48 is.an operating rod 52which extends rearwardly' through the dash 5th of the vehicle andisprovided. with a button or han tile 56 for convenient manipulation bythe operator of the vehicle. It will be noted that the lower side ot'therod 52. (at the end thereof nearest the operator) is toothed tocooperate with a projection 58 and that a spring 60, bearing against therod 52,-serves yieldingly to maintain engagement of the projection58with any notch in which it may be lodged.

The range of travel of the piston 34 in cylinder 32 is preferablysuiiicient topermit the complete closing of the shutters by spring 24,when the engine stops, regardless of the position of rod 52.

By virtue of the construction shown, the

manifold suction of the engine acting upon thepneumatic clutch.constituted bythe cylinder 32 and piston 3%. will always serve to tersimmediately to close under the influence of spring-24L, whenever theengine stops. It will be understood. however, that whenever operation ofthe engine is resumed, the shutters will open under the influenceofengine suction, to such open or partially opened positionas .maypreviously have been determined .by the manual positioning of rod 52.

Having thus described the invention, what I claim as new and desire tosecure by Letters Patent 01 the United States is:

l. lhe combination with a shutter for the radiator oi. an internalcombustion engine. manually controlled means tor opening said shutter.and automatic means for causing the shutter to close when the-enginestops.

2. In combination with a shutter for the radiator of an internalcombustion engine,

manually controlled means for opening the shutter, and automatic meansrendering the manually controlled means capable of holding the shutteropen only when the engine is in operation.

3. The combination with a shutter for the radiator 0t internalcon'ibustic-n engine, iii-cans for normally closing said shutter, an'ianually actuated shutter control device, and means operativelyconnecting the shutter with said manually actuated device when and onlywhen the engine is in operation.

4:. The combination with a shutter for the radiator of an internalcombustion engine, means for normally closing said shuttena manuallyactuated shutter control device, and means operated by engine suctionadaptedoperatirely to connect the shutter with said manually actuateddevice when and only when the engine is in operation.

5. The combination with a shutter tor the radiator of an internalcombustion engine, manually actuated operating device for said Snutter,means for holding said inanually actuated device in each of severaladjustments. and means for establishing an operating connection betweenthe shutter-and said manually actuated device when and only when theengine is inoperation.

6. The combination with a shutter tor the radiator of an internalcombustion engine of a motor vehicle. engine actuated means for openinthe shutter and means manually adjustable from thedrivers position fordetermining-theextent to which the engine actuated means may open theshutter.

7. in combination with a shutter for the radiator of an internalcombustionengine 0t motor vehicle, engine actuated means tor openingsaid shutter, and u'ieans manually adjustable from the drivers positionforcontrolling the engine actuated means.

8. In combination with a shutter torthe radiator o'fian automobileinternal combustion engine, manually actuated means atthe driversposition for adjusting the shutter during the operation of the engine.and engine actuated means cooperating with the manuallyactuated means tohold the shutters in adjusted position during engine operation, saidengineactuated means permitting; the shutters to close when the enginestops.

9. In combination with a shutter for an 10. I11 combination with ashutter -tor an automobile engine radiator, engine operated means foropening said shutter, and manually actuated means operable from theposition of the driver for determining the ex tent to which the shuttermay be opened by the engine operated means.

11. In combination with a shutter for an automobile internal combustionengine radiator, a spring tending to hold the shutter closed, an engineoperated device adapted to open the shutter when the engine is inoperation, and manually adjustable means operable from the position ofthe driver for determining the extent to which the shutter may be openedby the engine operated means.

12. In combination with a shutter for an engine radiator, a manuallyoperable actuating device therefor, and engine actuated means formaintaining the shutter under the control of the manually operable meanswhen the engine is in operation.

13. In combination with a shutter for an engine radiator, a manuallyoperable actuating device therefor, engine actuated means formaintaining the shutters under the control of the manually operablemeans when the engine is in operation, and means for closing the shutterwhen the engine stops.

14. In combination with a shutter for an automobile engine radiator,manually operable means at the drivers position for determining theextent to which the Shutter may open and engine actuated means foropening the shutter, during engine operation, to a degree determined bythe manually operable means.

15. In combination with a shutter for an engine radiator, spring meanstending to close the shutter, a manually adjustable controlling device,a shutter actuating member, and engine operated means for operativelyclutching the manually operable controlling device to said actuatingmember during engine operation.

16. In combination with a shutter for an engine radiator, spring meanstending to close the shutter, a manually adjustable controlling device,a shutter actuating member, and means operated by engine suction foroperatively clutching the manually operable controlling device to saidactuating member during engine operation.

17. I11 combination with a shutter for an engine radiator, means tendingto close the shutter, a manually adjustable controlling device, ashutter actuating member, and means for operatively connecting saidcontrolling device with the shutter when and only when the engine is inoperation.

18. In combination with a shutter for an engine radiator, a cylinder, apiston operating in the cylinder, a manually operated controllingdevice, one of the elements of the cylinder-piston structure beingconnected with the manually operated controlling device, the other ofsaid elements being connected with the shutter, and means for applyingengine suction to said piston and cylinder, during engine operation, toopen the shutter to a position determined by the adjust-ment of themanually operated control device.

19. In combination with an engine radiator shutter, spring means tendingto close said shutter, a manually operable actuating member, means forretaining said actuatinomember in any of several adjustments, and aconnection between said actuating member and the shutter comprising apair of telescoping suction actuated members which permit the connectionbetween the shutter and actuating member to be lengthened or shortened,and means for applying engine suction to the telescoping members tolengthen said connection and open the shutter to a degree determined bythe setting of the manually operable actuating member.

In witness whereof I hereunto subscribe my name this 23rd day of April,1926.

SAMUEL R. CUTLER, Administrator of the Estate of Fredeficlc M. Furber,Deceased.

